Reginald belfield



Patented Apr. 10 1888.

N. PETERS. FhukrLillwgrapher, Washinglnfl. D (L UNITED STATES PATENT Orrrca.

REGINALD BELFIELD, OF PITTSBURG, PENNSYLVANIA, ASSIGNOR TO THE WESTINGHOUSE ELECTRIC COMPANY, OF SAME PLACE.

SYSTEM OF ELECTRICAL TRANSLATION.

SPECIFICATION forming part of Letters Patent No. 380,86, dated April 10,1888.

(No model.)

To all whom it may concern:

Be it known that I, REGINALD BELFIELD, a subject of the Queen of Great Britain, residing in Iittsburg, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Systems of Electric Translation, of which the following is a specification.

This invention relates, generally, to a method of and organization of apparatus for distributing electric energy and automatically governing the same.

It relates particularly to those systems of electric distribution in which alternating or such like electric currents derived from any suitable source of electrical energy are employed, such currents being usually transmitted through the primary coils of one or more inductoriums 0r converters, and the currents thereby induced in the secondary coils being employed for operating translating devicessuch, for instance, as incandescing electric lights.

\Vhen the lights are connected in multiple arc with each other, it is necessary for the purpose of maintaining them at a constant brilliancy that the potential at the respective terminals thereof should remain approximately constant throughout the variations which may occur in the resistance of the translating-circuit.

The object of the present invention is-to so organize a system of this general character as to automatically cause an approximately-constant difference of potential to be maintained upon the workingcircuit and to readily permit of a decrease or increase of such potential as may be required at different times. Thus, for instance, in operating incaudescing electric lights, it frequently occurs that the brilliancy at which it is desired to maintain the lights should be modified. For example, at times it may be required that the regulator should secure the proper supply of current for operating a large number of lights at their highest normal brilliancy, while at other times it may be desired to burn a single light at a Very low candle-power, and between these limits any number of variations may be required.

The accompanying drawing is a diagram illustrating the general organization of circuits and apparatus adapted to carry out the invention.

Referring to the figure, A represents a magneto or dynamo electric generator or other 5 convenient source of electric energy. The generator is designed to transmit alternating or such like currents upon a main line, L. An alternating machine whose field-magnets are supplied by a dynamo, A, will be found adapted to this purpose.

An induction apparatus, B, herein termed a converter, hasaprimary coil, B, included in the primary circuit L. The coil B is included in a secondary circuit, L, which supit is capable of being withdrawn, is employed. 7 5

The coil E is included in series with the coil B of the converter. The coil E is included in multiple arc with the coil B and the translating devices D D 850.

The coils E and E are so wound and connected in circuit with reference to each other that the currents through them are in the same direction and tend to magnetize the core in the same direction. Therefore any increase or decrease of the current flowing through the coil E will increase or decrease the counter electro-motive force developed in the coil E. Thus it will be understood that should the machine A be so constructed as not to itself antomatically maintain a constant difference of 0 potential upon its circuit, then when certain of the translating devices D D, 850., are cut out of circuit the difference of potential between Z and Z will'be increased. Consequently more current will flow through the coil E, 5

thus increasing the counter electro motive force of the coil E, thus diminishing the current in the coil B, and so again tending to diminish the current through the coil B and se curing the proper normal difference of poten- 10o In other instances, 7o

tial between the conductors Z and Z", and vice 2. The combination,with a source of electric 5 versa. Again, should the difference of potencurrents and a circuit therefor, of a converter tial between the conductors L L be increased having its primary coil connected in said cirby cutting out translating devices or convertcuit, translating devices connected in the sec- 5 ers, the difference of potential between the ondary circuit of said converter, a soft-iron conductors Z and Z will still remain constant. core, and two coils applied thereto,one ofsaid Thus, if a converter, B has its primary coil 13" coils being connected in serics'with said priconnected in multiple arc with coil B of the mary coil and the other in multiple arc with converter B and its secondary coil 13 consaid secondary coil, and means for altering the nectcd with conductors Z" and 1', between which relative action of 'said soft-iron core and its there are arranged translating devices (1 d coils. 85a, then by cutting out more or less of the 3. The combination,withasource ofelectric translating devices (1' (1 8.50., the difference of currents and a circuit therefor, of a converter potential between the conductors Z and Z will having its primary coil connected in said cir- [5 be increased, thus increasing the flow of curcuit, translating devices connected in the secrent through the coil B, thus increasing the ondary circuit of said converter, a soft-iron 60 current in the coil B, thus raising the differcore, and two coils applied thereto,one of said once of potential between Zand lfleausing more coils being connected in series with said pricurrent to flow through E", and so raising the mary coil and the other in multiple are with counter electro-motive force in the coilE,thus said secondary coil, and one or more convertdiminishing the current in the coil B and ers in multiple arc with the firstnanied eon- 5 maintaining the normal difference of potential verter. upon the circuit L L. 4. The combination,with asource ofelectric The relative portions of the core F and the currents and a circuit therefor, of a converter 2 coils E and E are made adjustable with refhaving its primary coil connected in said circrence to each otheras, for instance, by a cuit, translating devices connected in the sec- 0 handle,f,orin any other convenient manner ondary circuit of said converter, a soft-iron and by this means any required brilliancy core, and two coils applied thereto,onc ofsaid upon the part of the lamps D D may be secoils being connected in series with said pri- 0 cured, the automatic regulation being still semary coil and the other in multiple are with cured, as will be evident. This latter feature said secondary coil, means for altering the 7 is of service also ininstances where thegenerrelative action of said soft-iron core and its ator produces currents of constant difference coils, and one or more converters in multiple of potential. are with the firstnamed converter. 5 I claim as my invention-- In testimony whereof I have hereunto sub- 1. The combination,withasource of electric scribed my name this th day of May, A. D. currents and a circuit therefor, of a converter 1887. having its primary coil connected in said circuit, translating devices connected in the sec- REGINALD BELFIELD. o ondary circuit of said converter, a soft-iron core, and two coils applied thereto,one of said \Vitnesses: coils being connected in series with said pri- DANL. W". EDGECOMB, mary coil and the other in multiple are with CHARLES A. TERRY. said secondary coil. 

